This invention was developed to provide a temporary and portable device for tying up a boat at a convenient and safe point of attachment on a dock structure, where no permanent point of attachment currently exists. It primarily comprises a strong, flexible strap that can be wrapped around a dock piling or other structure of similar circumference and held tightly in place by means of a cam-lock buckle and Velcro. A conventional dock cleat is bolted to this strap as a secure point of attachment for a boat docking line.